<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        
    </style>
</head>
<body>
    
    <label for="upload" class="input-file-button" >上传文件</label>
    <input type="file" id="upload"> 
</body>
</html>